In addition, the stripe pattern for the recording media must be able to solve this problem, and for the following are some of the more common media. The fringe spacing depends on the angle between the object and reference beams. For example, if the angle is 45 °, the wavelength of 0.5 microns, 0.7 microns or fringe spacing of about 1400 lines / mm. Hologram of a job can be, if not all of the edges are resolved, but the image resolution is reduced as the recording medium reduces the resolution. These are discussed in the following section.

Mechanical stability is also important when the hologram. If a light beam changes in the other due to vibration or air flow moving across the stage of vision stripes. If the edge of space by one or more of the fringe shift, the light intensity is the average, and are not holographic. A half-wavelength shift from a relative path to the edge of the interference pattern. Therefore, the stability requirements are very strict.

In general, the decision in the light of the coherence length in the interests of the hologram can record the maximum depth of field. A good holographic laser usually has a coherence length of several meters, enough for deep hologram. Some pen laser pointer has been used to make small holograms. The hologram is not limiting the size of the laser pointer (which can be more than a few meters), coherence length, but less than 5 mW low power.

The object, forming a scene to be in normal circumstances, the light has a rough surface, so that they spread out over a wide range of light angles. A mirror reflection (or shiny) surface it is generally reflected in only one direction at each point on the surface light source, light and are unlikely event in the recording medium. Object from a rough surface in the form of an objective speckle pattern of scattered light with random amplitude and phase.

Plane wave reference beam is generally not before, it is usually a divergent wave front is placed in the path of the laser beam lens composition.

Hologram Labels

Hologram

3D three-dimensional holograms are holograms, digital three-dimensional hologram, hologram 2D/3D, dot-matrix hologram hologram and different types of restructuring to improve security. As hidden text, text-micron, kinetic sculpture ridge, true color / photo, flip-flop/switching/multi-channels, pure white, flash play assistant secuity feature will also improve security. Holograms have more security features conbination will have more sense of security. Safety pressure was altered into “invalid “, “original”, honeycomb-shaped design features introduced, the black transparent demetalized sequantial serial number and the number of laser hidden text, hidden text and micro Moree special text also obviously greatly enhance your security hologram Fig. We have over a hundred general design hologram labels and holographic film, holographic hot stamping foil, hologram transparent in the stock code coverage. We also offer different sizes up to 1200’s first holographic master mm * 650 mm size.

Hologram

Holography is a technique to record the light field, and reconstruction, when the original field no longer exists. It is similar to recording where the sound field is in such a way that it can later be copied code.

Although often called three-dimensional holographic photography, this is a misunderstanding. Photo representatives, hologram, light the scene when appropriate a single fixed image, re-created scenes from the original to light, which can be from different distances, just like in the original scene at different viewing orientations. Hologram itself is a very good random mode, which does not seem to take it the relationship between recorded scenes.

To record the hologram, from an object or a group of objects scattered, some of the light falls on the recording medium. The second light beam, known as the reference light, and illuminated the recording medium, so that interference between the two beams. The resulting intensity of the radiation field is different from that in the holographic recording seemingly random pattern. The right of the map is part of the hologram pictures – the object is a toy car. This photo is from the backlight and the diffuse light hologram, and the focus of the board.